Valve actuation for oscillating cylinder expansible chamber motors



Nov. 9, 1948.

A. N, PIGG 2,453,640 VALVE ACTUATION FOR OSCILLATING CYLINDER EXPANSIBLE CHAMBER MOTORS I Filed sept. 12,' 1947 /9 f@ 7T 9.x

Zz// ///l "Jn/wz/rvtmw4 Nov. 9, 1948. I IGG A. N YALVEl ACTUATION FORl OSGILLATING CYLINDER ,Filed spt. 12, 1947 EXPANSIBLE GHAMBER MOTORS 2 Sheets-Sheet 2 l an oscillatable cylinder caused by oscillation A further object of this invention is to provide n forward or rearward Patented Nov. 9, 1948 VALVE ACTUA'TION FonosCIlLATING CYL-` INDER nxPANsrBLE CHAMBER Motions` Archie nl Pigg, Ferndale, Michi j Application september 12, 1947, `serial No. 773,587 l zclaims. (oliizifes) vlThis invention relates to steam engine n, oscillatable cylinder type. i

An object of this invention is to provide an im` proved tion therefor. l

Another object of this inventionis lto provide having a pair of opposed guides within which sliderodscarried by the piston rod slidably engage, so `that the piston will be relieved of any twisting or rockingstrain of the cylinder.

an improved valve structure which includes means for adjusting the valve so as to provide for u rotation of the crankshaft and to vary the" engine speed.

A further object of this invention is to provide anoscill'ating engine construction of this kind whichis of simple construction and embodies a minimum of parts.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosedin the drawings and specificationand then more particularly pointed out in the appended claims.

In the drawings,

Figure 1 is a plan View of a steam engine constructed according to an embodiment of this invention, i

Figure 2 is a sectional View taken on the line 2-2 of Figure Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 2,

Figure 4 is a fragmentary sectional View taken on'the line 4-4 of Referring designates generally a base whichhas extending Figure 2.

the standards II secured to the lower portion thereof a rock shaft I5 which is journaled in bearings I6 Iand I1 car-A ried by the upper ends of the standards II and I s cf the offset 2B of the `crankshaft i f providefor relief ofany bending strain on the pist la and fin order to i ton rod 22 during the vertical oscillation ofthe guide members 29 cylinder I 3,: I have provided apair of parallel rods Z'Iwhich are secured toextensions 28 carried by the cap bearinghl. `I

The slide rods 2,1areadaptedto slidethrough formed on sides of thecylinder I3 so that the slide rods 21 will bear substantially all of thebending strain caused by turning of `the crankshaft I8 and the oscillation ofthe cylinder I3,` `Thecylinder I 3 has `extending Ifrom one side thereof Ialsteam chest 30 and the cylinder le is formed witnspacec ports 3| and |32, communicatingwith the` steam chestv so during the reciprocation of the piston. s

:The `steam chest 3D has slidable therein a slide valve 33 whichiregulates the, opening and closing ofthe ports 3l4 and 132. i

reciprocated .in relation with respect to the recipropiston 2I and the oscillation of the The guide 4I is formed with an elongated horizontal slot 43 within which a roller 44 mounted on the bolt 39 engages. The cam engaging rod 40 includes a rear rod member 45 `formed with an axial bore 46 within which `an elongated valve adjusting rod 4T loosely engages.

The rod 4'! extends forwardly andfhas secured thereto a bearingr cap 48 which engages about 49 secured to the crankshaft I8 at` an eccentric one side of the offset 26.` The length of the valve operating rod 40 is adjusted to provide for forward, reverse, or regulated speed operation by meansof an adjustable yoke 5l).` The yoke TENTOFFICE N the steam chest,`

tion to the rod or bar spaced parallel arms u is formed of two pairs of upwardly divergent bars 5l which are secured at the lower ends to a connecting bar 52, and at their upper ends to a connecting bar `53. Outer pairs of bars 55 are vdisposed in parallel relation with the bars 5l and a pin 55, fixed relative to the rear rod member 65, engages through the forward pairs of rods 5l`and 54, and a second pin 56 attached to the valve adjusting rod lll engages between the rear pairs of rods 5| and 52. Vertical movement or adjustment of the yoke 50 will provide for moving the pins 55 and 56 toward or away from each other, and in this manner the valve 33 can be adjusted to provide forforward, reverse, or other regulated operation of the valve-33. Y

The yoke 5l! has extendingupwardly therefrom an arm 5l which is pivotally connected toY a yoke adjusting lever 58. The lever 58 is rockably mounted on the upper end of a supporting bar59, and a quadrant or toothed rack 6!) is fixed (relative to the supporting member ,wand

is engaged by ya spring-pressed .pawl-Gl' carried by the lever 58. t y

, In the use operation of j this 4 engine the Vvintake pipe 34 is connectedftoasource of steam pressure through the medium of ai Iflexible hose.

The valve 33 is adjusted by rockingof the lever 581'so that the piston 2i will start its reciprocation in the proper direction` As the piston 2! reciprocates within the cylinder i3, the latter will oscillate o r rock 'on Athe bearings i6. As cylinder i3 oscillates, lvalve 33 will be reciprocatedlin proper timed relation' by means of the The pin 55 which Vis disposed at the forward end oftherod45-is carried by a sleeve 52 which is supported' in forward spaced rela- 45 by means of a pair of @3, aslshown in Figure 2L I do not mean to ycon-fine myself tothe exact 'details ofV construction herein disclosed, but

' claim Aall variations falling "within the purview of the-appended claims.`

What I claim is: l. Asteaml engine" comprising a base, a cylinder, means rockably` mountmg` said cylinder en said base, a crankshaft rotatably carried by memben a second ried'by the other rod membena V-shaped adsaid base, a piston slidable in said cylinder, a piston rod connecting said piston with said crankshaft, a pair of slide rods fixed in parallel relation to said piston rod, a pair of guides for said slide rods carried by said cylinder, a steam chest carried by said cylinder, a valve slidable in said steam chest, a valve shifting rod connectedat yone end to said valve, a valve .operating cam on said crankshaft, said valve shifting rod includ;- ing a pair of telescoping rod members, and means adjusting said rod members relative to each other to thereby vary the valve position.

2. A steam engine comprising a base, a cylinder, means rockably mounting said cylinder on said base, a crankshaft rotatably carried by said base, a piston slidable in said cylinder, a piston rod connecting said piston with said crankshaft,

Tried by said cylinder, avalve slidable in said steam chest, a valve shifting rod connectedat Vone end to said valve, avalve operating cam on said crankshaft, said valve shifting rod comprising a pair of aligned rod members means slidably connecting said members together,4 a transversely disposed pin carried by onerod transversely disposed pin carjusting member engaging said pins, andan adv to said V-shaped member, vertical adjustment of said adjusting member effecting adjustment of said valve to thereby provide for forward or reverse operation REFERENCES CITED The following references are ofnecord in-the 

